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Stax

Stax — US subscription-based payment processor with flat-rate pricing, interchange-plus, and integrated POS for SMB merchants.

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Our Verdict

Math works for mid-volume US SMBs — below $10k/month, flat-rate processors beat the subscription.

Pros

  • Flat subscription pricing scales for volume
  • Interchange-plus transparency for larger SMBs
  • Integrated POS plus online processing
  • Break-even volume roughly $10k/month

Cons

  • Monthly fee hurts low-volume merchants
  • US-only — no international processing
  • Customer service complaints recurring online
  • Legacy tech feel vs modern API-first peers
Best for: US SMBs processing $15k+/month wanting predictable interchange-plus pricing Not for: Low-volume merchants or anyone needing modern developer APIs

When to Use Stax

Good fit if you need

  • Flat-rate subscription payment processing for US SMB merchants
  • Interchange-plus pricing for US retail and restaurant POS
  • Integrated POS and online checkout for US small businesses

Lock-in Assessment

Medium 3/5
Lock-in Score
3/5

Stax Pricing

Pricing Model
subscription
Free Tier
No
Entry Price
Enterprise Available
No
Transparency Score

Beta — estimates may differ from actual pricing

1,000
1001K10K100K1M

Estimated Monthly Cost

$25

Estimated Annual Cost

$300

Estimates are approximate and may not reflect current pricing. Always check the official pricing page.

Community Discussion

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